NYC-WTC_000230077

NYC 9/11 Public Portal Document

TEM Asbestos fair) Count Sheet ClientNam^ NYC BOE Volume (liters): 1944 Lab Group 7192 Filter Type / Filter Area: MCE 385 mm’ Lab Sample #: 21 Grid Opening Size: 0.01124 Client Sample #: 21 Area Examined: 0.04496 mm^

GRID BOX: Magnification: 20,000 GRID ID : Accelerating Voltage: 100 KeV # Grid Openings: 4 Analysis Date: 3/24/02

Analysis Performed By: MARK PEYSAKHOV

GO. Structure Structure Type Length ID of Structure N or 7 EDS (Nonadb No F B C M >=05 p =5p Chrys Amphibole Nonasb AmPig/ND No Coord <5p Elements)

-2

Struct = > 0.5p > 5:1 Aspect Ratio Grid acceptance: n/= Positive diffraction pattern properties conforming to <50% undissoked filter, overlapped or folded Totals laboratory identification criteria observed <10% particulate coverage >50% coverage ate least 20 unfolded or overlapped grid squares <5% F B C M >5p 3= EDS spectrum conforming to .laboratory holes or opaque areas identification criteria observed Chrysotile AMPHIBOLES . Amphibole F = Single Fiber Amosite ; B = Bundle (<3 fibers <1 fiber diameter apart Crocidolite ; Ambiguous C = Cluster (>3 Intersections) I Anthophyllite Non-Asbestos Tremolite M = Matrix Non-Identified ' Actinolite NSD = No Structures Detected

CONFIDENTIAL, CITY_21MC100_003388705 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000230077